干旱区生态环境知识资源中心(Arid): Study on Ecological Threshold of Groundwater in Typical Salinization Area of Qian'an County

Arid

DOI	10.3390/w13060856
	Study on Ecological Threshold of Groundwater in Typical Salinization Area of Qian'an County
	Qi, Zhiwei; Xiao, Changlai; Wang, Ge; Liang, Xiujuan
通讯作者	Liang, XJ (corresponding author), Jilin Univ, Key Lab Groundwater Resources & Environm, Minist Educ, 2519 Jiefang Rd, Changchun 130021, Peoples R China. ; Liang, XJ (corresponding author), Jilin Univ, Jilin Prov Key Lab Water Resources & Environm, Changchun 130021, Peoples R China. ; Liang, XJ (corresponding author), Drilling & Exploitat Technol Oil Shale, Natl Local Joint Engn Lab In Situ Convers, Changchun 130021, Peoples R China. ; Liang, XJ (corresponding author), Jilin Univ, Coll New Energy & Environm, 2519 Jiefang Rd, Changchun 130021, Peoples R China.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:6
英文摘要	A suitable groundwater level is an important condition to maintain the stability of the vegetation community, especially in arid and semi-arid areas. The surface of Qian'an County in Western Jilin Province is often accompanied by salinization due to the influence of natural and human factors. In order to maintain the healthy development of ecological vegetation and reduce the risk of soil salinization, the concept of an ecological threshold of groundwater level is proposed, and two methods are used to determine the reasonable ecological threshold of groundwater. (1) Based on field investigation and indoor experiment, the data layer of soil texture, land use type and groundwater mineralization degree in the research area was established by using remote sensing technology and GIS technology. According to the thickness of vegetation root layer and the height of capillary rise of different soil and water types, the influence of groundwater salinity is considered, and the sum of the two is taken as the ecological threshold of groundwater in the study area. The reasonable threshold value of suitable growth of various vegetation crops is 3.76 similar to 5.66 m. (2) According to the relationship between the normalized vegetation index (NDVI) and the groundwater buried depth and phreatic salt, the groundwater buried depth and the mineralization degree under the best vegetation cover are analyzed as follows: the buried depth of groundwater is between 4.8 m and 6.1 m, and the salinity of groundwater is between 0.37 and 1.25 g/L, which are reasonable groundwater properties in the study area of the ecological threshold. This result not only enriches and broadens the content of groundwater research, but also helps to predict the prospect of water resource development.
英文关键词	groundwater ecological threshold vegetation coverage soil salinization soil desertification hydrous water salt simulation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000651957000001
WOS关键词	SOIL-SALINITY
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351949
作者单位	[Qi, Zhiwei; Xiao, Changlai; Wang, Ge; Liang, Xiujuan] Jilin Univ, Key Lab Groundwater Resources & Environm, Minist Educ, 2519 Jiefang Rd, Changchun 130021, Peoples R China; [Qi, Zhiwei; Xiao, Changlai; Wang, Ge; Liang, Xiujuan] Jilin Univ, Jilin Prov Key Lab Water Resources & Environm, Changchun 130021, Peoples R China; [Qi, Zhiwei; Xiao, Changlai; Wang, Ge; Liang, Xiujuan] Drilling & Exploitat Technol Oil Shale, Natl Local Joint Engn Lab In Situ Convers, Changchun 130021, Peoples R China; [Qi, Zhiwei; Xiao, Changlai; Wang, Ge; Liang, Xiujuan] Jilin Univ, Coll New Energy & Environm, 2519 Jiefang Rd, Changchun 130021, Peoples R China
推荐引用方式 GB/T 7714	Qi, Zhiwei,Xiao, Changlai,Wang, Ge,et al. Study on Ecological Threshold of Groundwater in Typical Salinization Area of Qian'an County[J],2021,13(6).
APA	Qi, Zhiwei,Xiao, Changlai,Wang, Ge,&Liang, Xiujuan.(2021).Study on Ecological Threshold of Groundwater in Typical Salinization Area of Qian'an County.WATER,13(6).
MLA	Qi, Zhiwei,et al."Study on Ecological Threshold of Groundwater in Typical Salinization Area of Qian'an County".WATER 13.6(2021).